It'd be funnier (and possibly, down the line, safer, in case Amber's stalker decides to deliberately force contact just after tipping the filth off, and use that as a weapon) to get in before the dickwad, and take a restraining order out against HIM first. Actually I think it'd be a very good idea, primarily to prevent him doing exactly that.
The fact it would probably drive him apoplectic with berserk fury, and embarrass the living shit out him (and from the sound of things, he is positively full to bursting with shit, so that'd be a LOT of embarrassment. Enough of it to drive a flamingo bright pinkish red with embarrassment, just before it can take no more and falls over on one slightly bent-crooked leg, dead as a doorpost) would just be a bonus, so you could point and laugh and shout 'WANKER!!!' whilst making an obscene gesture with the fingertips of your right hand just touching the thumb tip, making a circle, and moving it sort-of sideways, in an up-and-down back and forth reciprocating cyclic motion.